Scientists make E coli breakthrough

Defeating the deadly bacteria E coli may be a step closer with the discovery of a previously unknown protein.

Researchers from the Canadian Queen's University, Ontario, have identified the protein that allows the strain E coli 0157:H7 to obtain the iron it needs for survival.

E coli gets iron by breaking down haem, the ferrous part of haemoglobin.

Dr Zongchao Jia, who led the research, said: "This discovery opens the door for studying the function of haem iron in this strain of E. coli, and may lead to an understanding of how to therapeutically isolate the protein to keep the bacteria from thriving."

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E coli primarily exists in the guts of cows, and it is thought around 15 per cent of cows carry it, but it may also be present in sheep, deer, goats, pets and wild birds.

Wales is currently facing its worst ever outbreak of E coli, with 159 people being stuck down by the bacteria. Four cases in Rhondda Cynon Taf have caused primary schools to be closed.

To avoid the bacteria it is necessary to cook beef thoroughly and to wash hands after handling raw meat. Heath experts have also advised farmers not to touch manure.

The Canadian discovery, however, is not the end of the research as if one source of iron is blocked, the bacteria then move onto another source.

Research is now focusing on developing a package of different drugs that that will stop all E coli's ways of getting hold of iron.

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